Fat or Fiction?

Looking at a plot of numbers of earthquakes over time (bear with me on this), you can see what looks like an alarming increase in activity, the coming of Armegeddon if you will, but only because we’ve installed more and more seismometers over time. Is the same true of obesity rates, or are we really, as a nation, just getting fatter? Click on the pic above to see the rates change through time.